Suspensions

Suspensions (from the Latin suspendo - to suspend) are heterogeneous medicinal systems, which are suspensions of solid particles in a liquid base.

Suspensions consist of two immiscible phases - solid (dispersed) and liquid (dispersed). The solid phase in suspensions most often consists of powders of water-insoluble medicinal substances. The liquid base is water, glycerin, oils and other liquids.

To stabilize suspensions and prevent sedimentation of solid particles, stabilizers are used - substances that increase the viscosity of the dispersion medium.

Suspensions are used for oral administration of insoluble drugs. Compared to powders and tablets, suspensions have better absorption and bioavailability.

A suspension is a heterogeneous system consisting of microparticles of another substance (dispersed phase) suspended in a liquid dispersion medium, which do not stick to each other and to the surface of the dispersed medium and do not settle under the influence of gravity or centrifugal forces. This concept was introduced to designate dispersed media proposed by V.K. Vysokovich V.V. Stepanov and N.A. Kiselev in 1889 and E.I. Vasiliev E.S. Merzhievsky in 192